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English definition of “defect”

defect

noun [C] uk   /ˈdiː.fekt/ us  
C1 a fault or problem in something or someone that spoils that thing or person or causes it or them not to work correctly: All R45 aircraft have been grounded, after a defect in the engine cooling system was discovered. There are so many defects in our education system. It's a character defect in her that she can't ever accept that she's in the wrong.Faults and mistakes a physical condition in which something is wrong with a part of someone's body: She suffers from a heart/sight/speech defect. The drug has been shown to cause birth defects. Cystic fibrosis is caused by a genetic defect.Physical irregularities

defect

verb [I] uk   /dɪˈfekt/ us  
to leave a country, political party, etc., especially in order to join an opposing one: When the national hockey team visited America, half the players defected. The British spy, Kim Philby, defected to the Soviet Union/defected from Britain in 1963.Running away and escaping
defector
noun [C] uk   /dɪˈfek.tər/ us    /-tɚ/
She was one of many Communist Party defectors.Runaways and refugees
(Definition of defect from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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